"This-image-in-grub" will put the image you have selected in nautilus, as image of grub2.
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You must run "image-grub" double click.

Run install.sh, or must replace /pc/ in commands by your username, you can do with these two commands.
Without being root!
sed -i 's|/pc/|/'`whoami`'/|' */image-to-grub/setup.sh
sed -i 's| pc| '`whoami`'|' */image-to-grub/setup.sh

install.sh also copy the scripts to ~/.gnome2/nautilus-scripts

You must have the scripts in the same folder, you can rename the folder if you wish, for example with a dot . front, to be an invisible file, and you can move it anywhere you want.
For use in nautilus-scripts:

Replace setup.sh for .setup-image-grub.sh in the file: image-grub with this command.

sed -i 's|setup.sh|.setup-image-grub.sh|' ~/.gnome2/nautilus-scripts/imagen-grub
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Uncheck the command line 8 "# eog" (remove "#"). To see in the image viewer the image you have in use in the grub, before changing.
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If you want to remove the grub wallpaper you can run this command
sudo rm/boot/grub/image-background.jpg
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You are free to modify and redistribute.
by Rodrigo Esteves baitsart@gmail.com www.youtube.com/user/baitsart
Enjoy it!